کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5483641 | 1522526 | 2017 | 52 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Organic geochemistry and petrology of Posidonia Shale (Lower Toarcian, Western Europe) - The evolution from immature oil-prone to overmature dry gas-producing kerogen
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
زمین شناسی اقتصادی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Organic geochemistry and petrology of Posidonia Shale (Lower Toarcian, Western Europe) - The evolution from immature oil-prone to overmature dry gas-producing kerogen Organic geochemistry and petrology of Posidonia Shale (Lower Toarcian, Western Europe) - The evolution from immature oil-prone to overmature dry gas-producing kerogen](/preview/png/5483641.png)
چکیده انگلیسی
FT-IR spectra show a decrease in functional group bands with increasing maturation which has been quantified. CP-Py-GC-MS analyses indicate an increase in hydrocarbons, especially for short- and medium-length n-alkanes, with a strong predominance of short-length alkanes at highest maturities (about 3% VRr). This effect, however, depends also on the applied pyrolysis temperature, where higher temperatures (920 °C, as compared to 650 °C) favor generation of short-length n-alkanes, especially for samples at high levels of maturation. Ratios of aromatic over aliphatic hydrocarbons or alkenes over alkanes show a non-steady evolution, depending also on the applied pyrolysis temperatures, indicating that higher pyrolysis temperatures are needed for pyrolytic alkene formation, with a maximum alkene formation for samples within early overmature maturities (~ 1.4% VRr). Aromaticity first decreases, but increases at high levels of maturation. Finally, weathering of the highly overmature sample (3% VRr) resulted in strong oxidation of organic matter with impact on Rock-Eval, FTIR and Curie Point-pyrolysis data.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Coal Geology - Volumes 176â177, May 2017, Pages 36-48
Journal: International Journal of Coal Geology - Volumes 176â177, May 2017, Pages 36-48
نویسندگان
Alexander Thomas Stock, Ralf Littke, Jan Schwarzbauer, Brian Horsfield, Christoph Hartkopf-Fröder,